The headforms are cast using the magnesium alloy AZ91-Ingot , density 1,8 Kg/liter according to the standard specifications , machine tooled to obtain the site for the ball joint ( diam. 2,75” ) and the thread M8 , to fix the clamp;

Surface finishing , polished by hand;

The tolerance on the dimensions is < 1%;

The weight are adjusted according to the mass of the drop carriage in order to reach the total mass required by the standard using a 1,6 Kg twin wires drop carriage;